Chris Mason: Burnham delivers deeply political speech with a personal core

The key thing to understand about Andy Burnham's speech is these were the words and the delivery of both a new prime minister and a grieving son.

Burnham is living through two life-shaping, even life-defining moments right now – becoming and adjusting to being prime minister during the final weeks of his dad Roy's life, and preparing his speech while dealing with the grief of his loss.

Reflections on his dad's life and influence formed the personal spine to this deeply political speech, which ranged far and wide.

Labour figures are enthused that they now have a leader with what they see as a clear sense of purpose that can be easily articulated.

The tacit, unflattering comparison with former PM Sir Keir Starmer is obvious .

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What stood out in this speech was its breadth. His pitch could, very broadly, be divided into the short term - what he hopes to achieve before a general election; and the long term - the prospectus he is beginning to assemble to put to the country when polling day comes around inside the next three years.